1010220111 has 12 divisors (see below), whose sum is σ = 1468503192. Its totient is φ = 669189456.

The previous prime is 1010220109. The next prime is 1010220119. The reversal of 1010220111 is 1110220101.

It is a happy number.

It is not a de Polignac number, because 1010220111 - 2¹ = 1010220109 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1010220093 and 1010220102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010220119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356061 + ... + 358886.

It is an arithmetic number, because the mean of its divisors is an integer number (122375266).

Almost surely, 2^1010220111 is an apocalyptic number.

1010220111 is a deficient number, since it is larger than the sum of its proper divisors (458283081).

1010220111 is a wasteful number, since it uses less digits than its factorization.

1010220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715110 (or 715107 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1010220111 is about 31783.9599641077. The cubic root of 1010220111 is about 1003.3951634861.

Adding to 1010220111 its reverse (1110220101), we get a palindrome (2120440212).

It can be divided in two parts, 1010220 and 111, that added together give a triangular number (1010331 = T₁₄₂₁).

The spelling of 1010220111 in words is "one billion, ten million, two hundred twenty thousand, one hundred eleven".